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(11)

EP 3 887 818 A1

(12)

(43) Date of publication: 06.10.2021 Bulletin 2021/40 (21) Application number: 20769866.3 (22) Date of filing: 06.03.2020

(51) International Patent Classification (IPC):  G01N 29/02(2006.01) G01N 29/44(2006.01) (52) Cooperative Patent Classification (CPC): G01N 29/02; G01N 29/44 (86) International application number: PCT/JP2020/009893 (87) International publication number: WO 2020/184496 (17.09.2020 Gazette 2020/38)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 08.03.2019 US 201962815379 P (71) Applicant: Ball Wave Inc. Sendai-shi, Miyagi 980-8579 (JP)

(72) Inventors: IWAYA Takamitsu Sendai-shi, Miyagi 980-8579 (JP) AKAO Shingo Sendai-shi, Miyagi 980-8579 (JP) OKANO Tatsuhiro Sendai-shi, Miyagi 980-8579 (JP) TAKEDA Nobuo Sendai-shi, Miyagi 980-8579 (JP) TSUJI Toshihiro Sendai-shi, Miyagi 980-8579 (JP) OIZUMI Toru Sendai-shi, Miyagi 980-8579 (JP) FUKUSHI Hideyuki Sendai-shi, Miyagi 980-8579 (JP) SUGAWARA Maki Sendai-shi, Miyagi 980-8579 (JP) TSUKAHARA Yusuke Sendai-shi, Miyagi 980-8579 (JP) YAMANAKA Kazushi Sendai-shi, Miyagi 980-8579 (JP) (74) Representative: Hoffmann Eitle  Patent- und Rechtsanwälte PartmbB Arabellastraße 30 81925 München 81925 München (DE)